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Old 28th January 2013, 03:39 AM   #1
insoc is offline insoc  Costa Rica
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Default Fitting 6 3/4" speakers onto 6 x 9" doors?

Hello. I'm in the process of replacing my front door speakers (with components) and have found that no one makes 6x9" components speakers. As my OEM front doors have 6x9" speakers and as such the hole for that size of speakers, could it be possible to fit a 6 x 1/2" or 6 x 3/4 woofer in such door? Thank you!!
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Old 28th January 2013, 04:40 AM   #2
insoc is offline insoc  Costa Rica
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Well I think I've found myself the answer: Universal 6"x9" to 5-1/4" or 6-1/2" Brackets Speaker adapter plates at Crutchfield.com

Thank you anyway!
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Old 28th January 2013, 05:55 AM   #3
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Or make an adaptor out of MDF.
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Old 28th January 2013, 02:06 PM   #4
insoc is offline insoc  Costa Rica
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Thank You! Any advantage of the MDF over the other one (plastic) ?
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Old 28th January 2013, 06:34 PM   #5
Satyr is offline Satyr  United States
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Default revenge of the 6x9...

Unless the adapters are high quality and thick plastic, there is a possibility they will vibrate. On the other hand- MDF can be crumbly and unless your jigsaw skills are pretty high- they can make a mess and even if under grilles- can look bad. Some installers back in the 80s (when lots of cars had 6x9s in the rear deck) fabricated adapter plates out of painted sheet metal that allowed them to install 8"s for "mid bass" and then would mount a wide-range soft tweeter on the underside of the 6x9 grille firing upward to give a pseudo "coaxial" look- but the SQ was much better than ANY 6x9 available. Good luck.
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Old 30th January 2013, 06:06 PM   #6
insoc is offline insoc  Costa Rica
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Thank you for all your answers.

One last QUESTION: The speakers I am actually buying are 6 3/4 not 6 /12. There are plenty of 6x9 to 6 1/2 adapters but no 6 3/4. Will I be fine with the 6x9 to 6 1/2 adapter with my 6 3/4 speakers? Any comments? Thanks again!
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Old 30th January 2013, 06:48 PM   #7
Satyr is offline Satyr  United States
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You will have to find out the width of the speaker basket below the mounting surface to see if it will fit into the opening of the adapter- assuming you are mounting it from the top, and you will have to check to make sure the screw holes line up. If you are mounting it from below, you will just have to see if the mounting holes in the adapter will line up with the speaker you intend to install.

One potential problem that I see is that if you are mounting from below, the width of a 6.75" speaker might be wider than the adapter- so it won't mount flush. And a potential problem is that when mounting from the top, the speaker may protrude beyond the adapter and not only not be able to mount flush, but might look janky too.

You will have to do ALOT of measuring to make sure these speakers will work in this application. You might be better off with a good set of 6.5s to use with the adapter instead. If you have no choice but to use the 6.75s and they won't work with the adapters, you might consider making your own adapters using a jigsaw and plywood or MDF as suggested. Good Luck and let us know how it works out.
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Old 30th January 2013, 11:03 PM   #8
insoc is offline insoc  Costa Rica
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Thanks Satyr, your explanation is quite clear. Unfortunately after much research I was decided to buy the PS165 Focal Speakers but know it seems that I will need to find another. Thank you!
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Old 31st January 2013, 03:45 PM   #9
Satyr is offline Satyr  United States
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I have a truck with two factory 4X10" speaker holes, so I know what you are going through. 20 years ago, you could find aftermarket manufacturers who still made speakers for these cars, and it was because 20 years ago, car designers/manufacturers didn't build auto sound systems for SQ- a "car radio" was an afterthought. More thought went into the design of the stupid cupholders than the stereo the driver would listen to. I'm sure this is why the car audio aftermarket exploded in the 80s and 90s.

The fabrication required to address my 4X10 problem proved to be too much, so I finally gave up and just bought some speakers that would fit. The SQ is not very good compared to my other car- but they certainly sound better than the worn out 25 year old paper drivers with whizzer cones they replaced.
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Old 31st January 2013, 03:48 PM   #10
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Surely you can enlarge the hole in a 6 1/2 adaptor to 6 3/4.
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